681325060749 has 4 divisors (see below), whose sum is σ = 908433414336. Its totient is φ = 454216707164.

The previous prime is 681325060681. The next prime is 681325060763. The reversal of 681325060749 is 947060523186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 681325060749 - 2⁹ = 681325060237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (681325060799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113554176789 + ... + 113554176794.

It is an arithmetic number, because the mean of its divisors is an integer number (227108353584).

It is a 1-persistent number, because it is pandigital, but 2⋅681325060749 = 1362650121498 is not.

Almost surely, 2^681325060749 is an apocalyptic number.

It is an amenable number.

681325060749 is a deficient number, since it is larger than the sum of its proper divisors (227108353587).

681325060749 is a wasteful number, since it uses less digits than its factorization.

681325060749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227108353586.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 681325060749 in words is "six hundred eighty-one billion, three hundred twenty-five million, sixty thousand, seven hundred forty-nine".